Modeling and Analyzing for Rotor System with Imbalance-Misalignment Coupling Faults Based on Nonlinear Finite Element Method

Fu Ze Xu; Xue Jun Li; Guang Bin Wang; Yi Lin He

doi:10.4028/www.scientific.net/AMM.312.292

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 312Modeling and Analyzing for Rotor System with...

Modeling and Analyzing for Rotor System with Imbalance-Misalignment Coupling Faults Based on Nonlinear Finite Element Method

Abstract:

This thesis constructs the dynamical model of the imbalance-misalignment coupling faults and the finite element model of the rotor system which are supported by rolling element bearing. It analyses the impacts from the coupling faults to the system on the basis of nonlinear finite element method, dynamic theory and Newmark-beta numerical integration method. It also studies the influence of the unbalance, misalignment and coupling faults to the system by applying the dynamic response chart and time-frequency properties. The study shows that there exist unstable high and low harmonic components, the unbalanced signal overshadowed by misalignment. It also discovers that besides the working frequency, there also exist tow times frequency and other high doubling components on the response spectra with two times frequency for the most. All those study results provide some theoretical reference for the fault diagnosing of the rotor bearing system, the vibration control and the stability research.

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Periodical:

Applied Mechanics and Materials (Volume 312)

Pages:

292-295

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.312.292

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Online since:

February 2013

Authors:

Fu Ze Xu, Xue Jun Li, Guang Bin Wang, Yi Lin He

Keywords:

Coupling Faults, Misalignment, Newmark-Beta, Rotor System

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References

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